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Niobium dimer


Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Sharon G. Lias and Joel F. Liebman

Ionization energy determinations

IE (eV) Method Reference
6.368 ± 0.001LSJames, Kowalczyk, et al., 1994

Constants of diatomic molecules

Go To: Top, Gas phase ion energetics data, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Klaus P. Huber and Gerhard H. Herzberg

Data collected through March, 1975

Symbols used in the table of constants
SymbolMeaning
State electronic state and / or symmetry symbol
Te minimum electronic energy (cm-1)
ωe vibrational constant – first term (cm-1)
ωexe vibrational constant – second term (cm-1)
ωeye vibrational constant – third term (cm-1)
Be rotational constant in equilibrium position (cm-1)
αe rotational constant – first term (cm-1)
γe rotation-vibration interaction constant (cm-1)
De centrifugal distortion constant (cm-1)
βe rotational constant – first term, centrifugal force (cm-1)
re internuclear distance (Å)
Trans. observed transition(s) corresponding to electronic state
ν00 position of 0-0 band (units noted in table)
Diatomic constants for 93Nb2
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A (280) 1          A larrow X 1 (18704)
Green and Gruen, 1972
X 0           

Notes

1Absorption in Ar matrix at 14 K.

References

Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

James, Kowalczyk, et al., 1994
James, A.M.; Kowalczyk, P.; Langlois, E.; Campbell, M.D.; Ogawa, A.; Simard, B., Resonant two photon ionization spectroscopy of the molecules V2, VNb, and Nb2, J. Chem. Phys., 1994, 101, 4485. [all data]

Green and Gruen, 1972
Green, D.W.; Gruen, D.M., Absorption spectra of Nb atoms isolated in rare-gas matrices, J. Chem. Phys., 1972, 57, 4462. [all data]


Notes

Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, References